GB581801A - Improvements in and relating to the magnetic depolarization of ships - Google Patents
Improvements in and relating to the magnetic depolarization of shipsInfo
- Publication number
- GB581801A GB581801A GB17021/40A GB1702140A GB581801A GB 581801 A GB581801 A GB 581801A GB 17021/40 A GB17021/40 A GB 17021/40A GB 1702140 A GB1702140 A GB 1702140A GB 581801 A GB581801 A GB 581801A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ship
- current
- relay
- strip
- ships
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G9/00—Other offensive or defensive arrangements on vessels against submarines, torpedoes, or mines
- B63G9/06—Other offensive or defensive arrangements on vessels against submarines, torpedoes, or mines for degaussing vessels
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Dc Machiner (AREA)
Abstract
581,801. Automatic control systems for de-magnetizing ships. YOUNG, G. R. Nov. 28, 1940, No. 17021. Convention date, Nov. 29, 1939. [Class 38 (iv)] [Also in Group XXXIII] In apparatus for de-magnetizing iron ships comprising a strip B of copper which is wound one or more times around the hull A of the ship, and through which is passed an electric current which produces a magnetic flux in the opposite direction to that due to the natural magnetism, means are provided whereby the direction and strength of the current in the strip is automatically controlled so as to neutralize variable natural magnetism. In the form shown, the turns of the winding are wound around the hull transversely to its length, and are spaced at intervals, to co-operate with a magnetic relay V at one end of the ship, but the winding may be arranged longitudinally, or partly diagonally and partly longitudinally, to co-operate with a magnetic relay at the top or bottom of the ship. The apparatus includes a direct-current reversible generator E with commutator brushes C, D which is reversed by a reversible motor through gearing G, relays I, J connected to a battery K, and power supply leads M, N for the reversible motor. The relay V comprises a soft iron base R with polepieces R<1>, R<2> and a permanently magnetized pivoted needle S with a contact T, adjustable by a spring S<2>, which is movable between contacts L, L<1>. Should there be north or south magnetism in the ship, the iron base R will move the needle S against contact L<1> or L, and one of the relay coils I<1>, J<1> will be energized to attract an armature P on an insulated block O. The corresponding contacts M<2>, N<2> are brought into contact with the corresponding contacts M<1>, N', the reversible motor is started, the brushes C, D are moved in a clockwise or anticlockwise direction around the generator E, and current of the required direction and strength is passed through the strip B.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NZ581801X | 1939-11-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB581801A true GB581801A (en) | 1946-10-25 |
Family
ID=19915962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17021/40A Expired GB581801A (en) | 1939-11-29 | 1940-11-28 | Improvements in and relating to the magnetic depolarization of ships |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB581801A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1038432B (en) * | 1955-01-22 | 1958-09-04 | Siemens Ag | Device for measuring the pitching and rolling motion of ships |
| DE1040407B (en) * | 1954-12-29 | 1958-10-02 | Siemens Ag | Degaussing system for ships |
| DE1098393B (en) * | 1955-12-22 | 1961-01-26 | Siemens Ag | Degaussing system for ships |
| DE1118043B (en) * | 1955-07-26 | 1961-11-23 | Siemens Ag | Degaussing system for ships |
| FR2491667A1 (en) * | 1980-10-02 | 1982-04-09 | Lizot J Pierre | Bermuda triangle phenomena compensator for ships and aircraft - uses copper cables surrounding structure in and spaced in vertical direction to provide compensating magnetic field when phenomena appear |
| GB2154031A (en) * | 1984-02-04 | 1985-08-29 | Licentia Gmbh | Stray-field-controlled magnetic self-protection |
-
1940
- 1940-11-28 GB GB17021/40A patent/GB581801A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1040407B (en) * | 1954-12-29 | 1958-10-02 | Siemens Ag | Degaussing system for ships |
| DE1038432B (en) * | 1955-01-22 | 1958-09-04 | Siemens Ag | Device for measuring the pitching and rolling motion of ships |
| DE1118043B (en) * | 1955-07-26 | 1961-11-23 | Siemens Ag | Degaussing system for ships |
| DE1098393B (en) * | 1955-12-22 | 1961-01-26 | Siemens Ag | Degaussing system for ships |
| FR2491667A1 (en) * | 1980-10-02 | 1982-04-09 | Lizot J Pierre | Bermuda triangle phenomena compensator for ships and aircraft - uses copper cables surrounding structure in and spaced in vertical direction to provide compensating magnetic field when phenomena appear |
| GB2154031A (en) * | 1984-02-04 | 1985-08-29 | Licentia Gmbh | Stray-field-controlled magnetic self-protection |
| US4823081A (en) * | 1984-02-04 | 1989-04-18 | Licentia Patent-Verwaltungs-Gmbh | Interference magnetic field compensation method which includes supplying a current to a coil to compensate the field |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB581801A (en) | Improvements in and relating to the magnetic depolarization of ships | |
| GB1247830A (en) | A linear induction motor | |
| FR2251092A1 (en) | Quick action safety relay with direct or alternating current coil - uses air cored disc shaped drive coil with coaxial disc shaped armature coil | |
| GB517000A (en) | Improvements relating to electromagnetic relays | |
| GB1424986A (en) | Electromagnetic device | |
| GB805223A (en) | Improvements relating to electric motors | |
| SU52298A1 (en) | Circular Calling Device, Telegraph Control Points | |
| GB447948A (en) | Improvements in and relating to electric discharge devices | |
| US1721177A (en) | Electromagnetic relay | |
| GB424795A (en) | Improvements in or relating to electromagnetic relays | |
| ES482137A1 (en) | Control circuit for reducing field voltage in D.C. motors | |
| SU141539A1 (en) | Inductor for electric motors | |
| US1542922A (en) | Telephone receiver | |
| GB424400A (en) | Improvements in or relating to devices for testing the armatures of electric motors | |
| SU133098A1 (en) | Differential relay | |
| SU78410A1 (en) | Device for automatic control of direct current electric motors | |
| GB686355A (en) | Improvements in and relating to electric motor control systems | |
| GB236163A (en) | ||
| GB779186A (en) | Rotary electromagnets | |
| ES223757A1 (en) | An adjustable time switch and automatic switch (Machine-translation by Google Translate, not legally binding) | |
| JPS57199669A (en) | Dot printing head | |
| GB247419A (en) | Improvements in and relating to switch-gear for automatic reversing electric motors | |
| GB113096A (en) | An Improved Device for Regulating the Voltage of Current Generated by a Dynamo. | |
| GB690232A (en) | Improvements in and relating to torque producing devices such as relays or indicating instruments | |
| GB439495A (en) | Improvements in means for controlling the tension of wires, during their winding on or from spools |